Rocketbox HD500-MOS Linear Amplifier (Pre-Owned)

The Rocketbox HD500-MOS is a heavy-duty 500-watt linear amplifier designed for serious CB and 10-meter radio operators seeking increased transmit power, improved signal reach, and reliable performance. Built in the USA and known for its rugged construction, the HD500-MOS delivers strong output while maintaining clean signal quality across multiple operating modes.

Features:

• Up to 500 watts PEP output power (depending on installation and drive levels)
• Compatible with AM, FM, SSB, and CW operation
• High / Medium / Low power settings
• Built-in receive preamp
• Auto SSB delay circuit
• MOSFET-based design for dependable performance
• Wide frequency coverage: 26–30 MHz
• Low drive requirements for compatibility with many radios
• Durable metal chassis construction

Specifications:

• Frequency Range: 26–30 MHz
• Input Drive: Approximately 2–4 watts dead key
• Power Supply: 12–14.5V DC
• Current Draw: Up to 50 amps
• Recommended SWR: 1.5:1 or lower
• Modes: AM / FM / SSB / CW
• Output Power: Up to 500 watts (varies by setup and operating conditions)

Condition: Pre-Owned
This unit is pre-owned and may show normal cosmetic wear from previous use. Please review photos carefully for actual condition. Unit has been tested for basic functionality unless otherwise noted. Performance may vary depending on radio, antenna system, power supply, and installation.

What's Included:

• Rocketbox HD500-MOS Amplifier
• Power lead/fuse (if shown in photos)
• No additional accessories unless pictured

Important Notice:
Buyer is responsible for understanding and complying with all applicable FCC regulations and local laws regarding amplifier operation. This equipment is commonly marketed for export, experimental, industrial, or authorized amateur-radio applications where permitted.